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Anvisha [2.4K]
3 years ago
11

I know the answer but i’m not sure how to do it

Mathematics
1 answer:
IgorLugansk [536]3 years ago
4 0
Area of circle = pi x r^2
= 3.14 x 3^2
= 3.14 x 9
= 28.26 square meters

A sprinkler rotates thru 60° = 1/6 of a circle (360 / 6 = 60°)

so 
28.26 / 6 = 4.7

Answer
4.7 square meters
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If the mass of a proton is 2.53 x 10^-37 gram, what is the mass of 1,000 protons
Dmitrij [34]
We can solve this problem by the rule of three.

1000 protons=10³ protons

1 proton------------------2.53*10⁻³⁷g
10³ protons----------   x

x=(10³ protons  *   2.53*10⁻³⁷) / 1 proton=2.53*10⁻³⁷⁺³ protons=
=2.53*10⁻³⁴ protons

answer: 2.53*10⁻³⁴ protons
3 0
3 years ago
If Sarah is 24 years younger than her mother and if the sum of their ages is 68, how old is Sarah?
pav-90 [236]
24 + x = 68 so 68-24=x.
68-24=44
Sarah's mother is 44
7 0
3 years ago
Read 2 more answers
3. approximate value of log 3 base 7​
xxTIMURxx [149]

Answer:

0.56457

Step-by-step explanation:

log 3  with base 7  =    (Log 3)/ (Log 7) = 0.47712125 / 0.845098040014

(Log 3) / (Log 7) = 0.56457

3 0
3 years ago
Help me with this please #17
jasenka [17]

9514 1404 393

Answer:

  C. symmetric with respect to the origin

Step-by-step explanation:

A graph must pass the vertical line test to be called the graph of a function. No function will ever be symmetrical with respect to the x-axis, because that would mean it fails the vertical line test.

An even function is symmetrical about the y-axis. An even function has the characteristic that ...

  f(-x) = f(x) . . . . an even function

An odd function is symmetrical about the origin. An odd function has the characteristic that ...

  f(-x) = -f(x)

__

The given function is f(x) = -1/x. Then the value of f(-x) is ...

  f(-x) = -1/-x = 1/x = -f(x)

The given function is an odd function, so is symmetrical about the origin.

5 0
2 years ago
Robert delivers papers every morning. On Sundays he has to deliver 65 papers and on each of the other days he only has to delive
AnnZ [28]

Answer:

B. 305

Step-by-step explanation:

sundays + 6 other days * papers delivered = total papers delivered

65 + 6 * 40 = total papers

65 + 240 = total papers

305 = total papers

4 0
3 years ago
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